Linear Blocking Tools 24" Ultra Flex Block

$100.00

~~$100.00~~ $100.00

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TYPE OF SANDPAPER Sticky Hook & Loop

Quantity

24" Ultra Flex Block

High strength polycarbonate

CNC cut and Routered

Lifetime Warranty

Satisfaction Guarantee

Shipping Policy

We ship from our warehouse in Antigo, Wisconsin. Processing under normal circumstances (not backordered or during sale / high order times) is 1-2 business days.

We ship using UPS or USPS (selected by customers at checkout).

For shipping-related issues, start with our Claims & Returns form. If your order included Order Protection and the issue is loss, theft, carrier damage, or misdelivery in transit, use the Order Protection claims portal from your confirmation email first.

Warranty

All Linear Blocking Tools are backed by a Limited Lifetime Warranty. Coverage includes product failures caused by normal use and normal operating conditions. Damage caused by misuse, abuse, accidents, unauthorized modification, improper storage, or cosmetic wear is not covered.

Please review our Warranty Policy for full coverage details. To start a warranty claim, use our Claims & Returns form.

Financing

That's right! Linear now offers 0% Financing to most applications! Zero hit on your credit score and no risk! Buy Now...Pay later!

How it works

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Your first payment is due at checkout. The remaining payments are automatically charged to your card saved on Shop Pay based on the payment plan you chose. Don't worry, you'll get an email reminder before each payment to remind you.

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When you choose Shop Pay at checkout, you can split your purchase into flexible installment payments.*

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Returns / Refunds

Returns are accepted within 30 days of delivery for unused items in original condition with original packaging and proof of purchase.

Custom Color Basecoats, OEMatch Basecoats, mixed paints, opened or used items, final-sale items, digital products, and gift cards are not returnable.

Please review our Return & Refund Policy for full details. To request a return or report a wrong or missing item, use our Claims & Returns form.

Why Linear?

Why Polycarbonate Beats Foam & Rubber

Foam and rubber blocks compress under pressure, masking imperfections you'll only see after paint. Linear's CNC-machined polycarbonate base is harder than the surface you're sanding — it maps every high and low with 100% accuracy.

"Most blocks will absolutely lie to you — they'll tell you it's straight but it's really not. With Linear blocks, I promise you they will not lie to you." — Ryan Evans, Count's Kustoms

Patented Vertebrae Design

Precision-cut rings along the polycarbonate spine control flex and distribute pressure evenly across the entire sanding surface. All edges are routed and radiused — no sharp corners to gouge your work. Place your hands anywhere on the block and pressure transfers uniformly to the base.

Faster Results, Less Effort

Use light pressure — three fingers, let the block do the work. The rigid base cuts efficiently without the brute force required by old-school blocks.

"You're actually doing it twice as fast but not putting in nearly the effort. It makes the job easier, faster, and a thousand times better." — Ryan Evans, Count's Kustoms

Rigid vs Flex vs Ultra Flex — Quick Guide

Rigid: Flat panels only — hoods, roofs, deck lids. Also great for rough-cutting body filler.

Flex: The everyday workhorse. Follows gentle curves while keeping a true surface. The 18" flex is the most used block on any car.

Ultra Flex: Compound curves, rolled fenders, dramatic body lines. Longer blocks = more flex. The 32" wraps fenders that no other block can follow.

Read the full block selection guide →

Ryan Evans Unboxes Linear Blocks

How to Clean Your Linear Blocks

A quick clean extends the life of your blocks and keeps them cutting flat.

Very Impressive Tool

I bought several of the Linear Ultra Flex Blocks and tried the 24" on a door that I had just finished (I thought). When I re blocked it I was amazed at how it showed several spots that were low and still needed work.

ultraflex block

I had done some block sanding with my 18 inch 3m sanding block and thought it looked pretty good,after purchasing the 24 inch ultra flex block and re-blocking those panels it showed otherwise,I have confidance its gonna be straight now!

24”

Very Nice blocks. Colten has done a good job of making a block that works fast and cuts straight.

linear block

So far I like it but maybe the sand paper I'm using I have to use my heat gun to get the sand paper off.

Ultra-Flex Perfect Flex!

24" of perfection. If you do a lot of curves double compound radius' or arches, or perhaps many high dollar vintage race cars then these blocks are essential in any kit. Doing restoration work far greater than the standards on the original car can be a daunting task, ask Chip Foose! On second thought, well he may never be ready to talk about his Lotus adventures even to this day, but at least it wasn't on a Type 14 Elite. Regardless sometimes if we understand just what the hell we're really getting ourselves into at times or not we still "Press - Onward and Upward!" These Ultra Flex Blocks are critical for any vehicles that are very keen on "Aerodynamic Principles" and if they're as important to the entire construction and strength of the car in it's light frailty of construction as say... a great lotoking (much better than) showroom finish, well then you simply NEED these blocks to keep all those curvy bits correct and laser smooth for the best airflow! On Elites Aerodynamics are everything, on a Francis Costin / John Frayling Elite it's cutting edge modifications from 1956 - 1963 era that were mostly never proved until many of NASCAR in America and European Race/SUPERCARS have brought engineering aerodynamics to the forefront of design and creativity. Convex to concave curves deserve "Linear Blocking Tools!" (period)

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Linear Blocking Tools 24" Ultra Flex Block