1. Material: drop-forged 40CR-V or 45# CARBON STEEL

2. Production technology: mirror polished, heat treated,chrome-plated

3. Size: 6mm,7mm,8mm,9mm,10mm,11mm,12mm,13mm,14mm, 15mm,16mm,17mm,18mm,19mm,

20mm,21mm,22mm,23mm,24mm,25mm,26mm,27mm,28mm,29mm,30mm,31mm,32mm; 1/4",5/16",

3/8",7/16",1/2",9/16",5/8",11/16",3/4",13/16",7/8",15/16",1",1-1/16",1-1/8",1-1/4"

4.package: hanging card, plastic rack,plastic box,double blister etc.

Or according to customer’s requirement.

5, Quality conform to ANSI and DIN3113 standard