Specifications: 
Material: Chrome vanadium steel CR-V 
Color: Black 
Product size: approx. Turn 1/2"( 12.5mm) ,3/8" (10mm) ,1/4" (6.3mm) connector 
1/4 x1/4 x 50mm length---1/4 " shank can be converted to 6.35mm square head 
3/8 x 1/4 x 50mm length---1/4 " shank can be converted to 9.53mm square head 
1/2 x 1/4 x 50mm length---1/4 " shank can be converted to 12.7mm square head 
1/4 x 1/4 x 65mm length---1/4 " shank can be converted to 6.35mm square head 
3/8 x 1/4 x 65mm length---1/4 " shank can be converted to 9.53mm square head 
1/2 x 1/4 x 73mm length---1/4 " shank can be converted to 12.7mm square head 
1/4 x 1/4 x 25mm length---1/4 " shank can be converted to 6.35mm square head 
1/4 x 1/4 x 30mm length---1/4 " shank can be converted to 6.35mm square head 
Quantity: 1 Set (8 Pcs)