Made from hardened and tempered 8650 chrome nickel alloy. Key is square cut and burr free for full depth precision fit. Provides maximum torque and prevents rounding out. SKU: 40468610 MFG: 14608 Shop more products by Eklind. SHARE Share on Facebook Tweet on Twitter Share on Google+ Pin on Pinterest Free shipping over $35 Normally ships within 24 hours $4.42 Quantity In Stock Add to cart Request a Bulk Quote Thank you for your quote request. We will be in touch. DETAILS Description DESCRIPTION Highlights: Size: 4mm Made from hardened and tempered 8650 chrome nickel alloy Key is square cut and burr free for full depth precision fit Provides maximum torque and prevents rounding out Cross reference to National hex key (MFG. # 272-559) Carded FEATURES MFR: 14608 SKU: 40468610 UPC: 037516146083 Brand: Eklind