●MAXIMUM TRACTION Molded spike design creates extra grip for maximum traction on the slopes. ●Size: diameter 20 mm, 4-ply cone rivets. The size of this spike is large enough to provide enough grid and still it can fit well on the board. ●MODULAR AND CONFIGURABLE MAT STOP 9 spikes on the stomp pad provide extra grip and perfect traction, 9 configurable parts to move where you need it for perfect traction. ●Quick and easy to use: 3M tape. ●International products have separate terms, are sold from abroad and may differ from local products, including fit, age ratings, and language of product, labeling or instructions.