Product: Parallel Key DIN6685 ISO9001: 2008 certificate 1.standard； DIN6885 2.type: type A with both end round 3. Size: 2mm-100mm 4. Material: Medium carbon steel others: stainless steel 4. Finish: Oiled,black oxide 5. type B both end flat and type C one round ,one flat are avaliable 6. Other: Customer design will be produced according to picture or drawings We are professional manufacture, who specialize in retaining ring, disc spring, parallel key, spring pin etc. For good quality, our products have been exported to many countries such as Germany, Iran, Turkey, Poland, Egpyt, USA, and so on