The Brunny P.O. Blocks 3056 are designed for skaters of all skill levels from beginner to expert shredder to send it; made to get you stalling, sliding and grinding with confidence and security. Designed with a wide surface area for stability and control, smooth edges to eliminate wheel bite and a curvature to lock into the coping. Using the slickest material known to humankind, these blocks will have you sliding with ease, and sending it with steeze. - Brunny Hardcore '3056 P.O Blocks' - Available Sizes: S, M, L & XL - Model: Version 1.2 (Improved Sizing) - Premium PU Formula Black w/ Curved Profile - Alu Bracket & Hardware included - Sold as PAIR - 'Pink Python' Colourway COMPATIBILITY: SureGrip: Sunlite, Avanti Chaya Kismet + Karma (w/ 10mm cushion) Apollo: Crazy Chuffed: Stock plate Moxie: Stock plate How to check which size grind block you need: - Turn your skates upside down, remove the top nut, the washer and the top bushing with the hanger along with the bottom bushing and the washer. - Repeat on both sides until just your kingpins are sticking up. - Measure the inner distance between the base of each kingpin. This gives you the max size of disco block needed for your skates; ie 72mm kingpin distance = 75mm grind block.