Zoom icon Click to expand Tap to zoom Chevron down icon Chevron down icon Gilbert SE 1 Day Clock Key by Gilbert Sale $8.30 | / SKU 74-200 1 2 3 4 5 6 7 8 9 10+ Quantity Chevron down icon Quantity Add to cart Spinner icon Notify me when back in stock Email address Email me when available Gilbert SE 1 Day Clock Key is a brass American Single End Clock Key with trademark and logo. The hole size measures 3.6 mm.