We offer two standards of Extractable Dowel; DIN7979D Hardened & Ground Extractable Dowels which are produced from Through Hardening Alloy 1.3505 (100Cr6) hardened to HRC58-64 with an Air Release Flat as standard and DIN7979C Metric Austenitic Stainless Steel Extractable Dowels produced from material 1.4305 (A2 Stainless Steel) .