Smaller keys usually have their full arc and their full measurement. (Large size Woodruff Keys are measured by the arc, not length of the key.). Per package of 25. SKU: 42649121 MFG: 71111 Shop more products by Imperial. Buy Drill Chuck Keys & Holders on sale from largest hardware hand tools store in USA SHARE Share on Facebook Tweet on Twitter Share on Google+ Pin on Pinterest Shipping not available to AK,AE,AA,AE,AE,AE,AP,GU,HI,PR,VI Free shipping over $35 Sold out $1.19 Quantity Sold Out Sold out Request a Bulk Quote Thank you for your quote request. We will be in touch. DETAILS Description DESCRIPTION Highlights: Length: 7/8 Thickness: 5/32 Key Number: 10 Smaller keys usually have their full arc and their full measurement. (Large size Woodruff Keys are measured by the arc, not length of the key.) Per package of 25 FEATURES MFR: 71111 SKU: 42649121 Brand: Imperial