1.Type:Delrin knob stainless steel locking hand retractable plunger 2.Material: SS, carbon steel, 3,High quality,cheap price 1. Type: Delrin knob stainless steel locking hand retractable plunger2. Material: Stainless steel, carbon steel,aluminum3 Finish: Zinc plated, passivated, Nickle plated4 Packing: Outer carton with inner ploybag5 Delivery time:10-15days6.MOQ: 500pcs 8. Standard: ISO, JIS, GB ...