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Linear Blocking Tools 24" Ultra Flex Block

Linear Blocking Tools 24" Ultra Flex Block

Regular price $70.00
Regular price $100.00 Sale price $70.00
Sale Sold out
Shipping calculated at checkout.

24" Ultra Flex Block

High strength polycarbonate

CNC cut and Routered

Lifetime Warranty

Satisfaction Guarantee


(1) 24" Ultra Flex Block

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Shipping Policy

We ship from a warehouse in West Virginia for all orders in all countries other than Australia. Processing under normal circumstances (not backordered or during sale / high order times) is 1-2 business days.

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


We are proud to offer a Limited Lifetime Warranty on all Linear Blocking Tools! All product failures (not due to abusing the tools) are fully covered! Just fill out this form



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

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Customer Reviews

Based on 8 reviews
Rick Haugen
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!

Dustin Ezell

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

Barry Ginter
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.


Excellent product and customer service!

Kirk Lockwood
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)