Snow Studs ST11Caracteristics Tungsten carbide Hot-dipped steel and galvanized stud Big tread for good anchoring Good durability Light Easy to install and dismantle 24, 100, 150, 200, 250 and 1000 unit packages Installation Tool Included ST = Standard Tread (without shoulder) Applications Safety boots, Mini tractor, Snowblower, Motocross, Enduro, ATV, Snowmobile Technical Information Always pre-drill with 1/16 "drill bit for snowmobile tracks. Ease installing and in pre-drilling we are sure we are going to be in the middle of the track and that we are going to go right. Add soap on the stud treads for better penetration. For a 120'' track, you need about 180 studs For 137'' track, you need about 200 studs For 144'' track, you need about 250 studs For the pattern of a snowmobile track, take the toughest studs. Category: IGrip Snow Studs ST11Specifications Material: Hardened steel Thread length: 11 mm Thread: 4 mm Unit per package: 24 Number: 103099