*Material:CR-MO
*Finish:black oxided
*1/4"length:68.5mm width:16.5mm hex:6.3mm weight:46g
*3/8" length:77.5mm width:18mm hex:6.3mm weight:62g
*1/2" length:89.5mm width:22mm hex:6.3mm weight:102g
CHAIN Enterprises CO., LTD.