Features Lug nut remover upgraded with a 8-point socket adapter, more labor-saving Drive torque multiplier wrench features a gear ratio of 1:16 to offer a torque output of 680NM Torque multiplier set made from quenched 40Cr alloy steel with chromeplating, ideal for sedans, vans, SUVs, mini-bus and mini-trucks Lug nut wrench kit comes with 4 sockets (17/19/21/22mm), capable of removing and installing various lugnuts Wrench sockets set comes with a sturdy case, easy to carry around. Product Description -Material: quenched 40Cr alloy steel with chromeplating -Gear ratio: 1:16 -Max torque output: 680N/M -3 sockets: 17mm/ 19mm/ 21mm/22mm -Case Size: 8.3*6.3*2.8in -Weight: 4.9 lb. How to use it: 1. Install the wind gun sleeve into the square end of the shank and the other end.