Hyper Flex Detail Set
Hyper Flex Detail Set
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Newly released large detail set. Highly flexible polycarbonate on one side and semi rigid foam on the other. Ideal for dry sanding and wet sanding extreme curves. CNC machined routered corners and edges. 3/16" foam, polycarbonate base thicknesses range on size.
Included (4 blocks):
2.5" X 18"
2.5" X 14"
2.5" X 10
2.5" X 6"
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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
- Add items to your cart (or shopping bag).
- Check out with Shop Pay.
- Choose the option to pay in installments.
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.
Buy now, pay later with Shop Pay
You can add the buy now, pay later with Shop Pay messaging in your online store banner, and the following subheadline:
When you choose Shop Pay at checkout, you can split your purchase into flexible installment payments.*
Quick approval, flexible payments, no late fees
You can create icons for quick approval, flexible payments and no late fees, and use the approved text.

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.
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.
I specifically bought these to work a 65 Corvette because of the contours but am currently wet blocking the paint on a 70 Mustang. So far ,so good. There is a pro/con. I understand the thickness for the flexibility but they are a bit tricky to grip. If they weren't two-sided, I would consider attaching a looped strap for a couple of fingers. All in all pretty satisfied so far. The Vette is the big test.🤘
Havent used them yet. They are extremely flexible which should help on some complex curves
I've ordered five sets of these. They are awesome. I use them for wet sanding and dry sanding.
Linear blocks have went to a new level! The flexible blocks are the best ! The contact of paper hitting primer is full contact of primer dust on every inch of sand paper on block. It makes sanding fun again. And the results are perfection!
I was very impressed on how well these are built. Glad to add tbese to my block inventory