No drilling will be necessary

made from injection-mold glass-filled nylon

Also helps you plant puck to road if you have limited wrist

Length helps get to mounting bolts on larger wheel trisksates

5 SO IT FITS 6

Shark Wheel 72mm Longboard Wheels (DNA Formula) Transparent Emerald Rollerbones No drilling will be necessaryBrand new DNA formula. Fast, soft and superior grip. Best wheel in the world over rough terrain (pebbles, debris, sand, water, etc). Made in USA All DNA formula wheel purchases comes in sets of 4 wheels total Brand new DNA formula is perfect for surfskate boards 30'' and longer such as Carver Skateboards and YOW Surfskate Boards. Fast, soft and superior grip is excellent for cruising, carving, freeride, downhill on all longboards such as Sector 9,