Tub Drain Wrench Zinc Compatible with Manufacturer Part Number 6020 Hex Wrench Size 1 1/2 in Overall Length 6 1/8 in Overall Diameter 1 3/4 in Patented Design to Install and Remove Tub Drains Without Scratching Fine Finishes. the only Tool of Its Kind That can be Turned With a 3/8 in or 1/2 in Ratchet Wrench and Extension From Either End Install and Remove Bath Tub Drains With or Without Cross Bars For Inside Diameter 13/16 in to 7/8 in SAE Not Adjustable Self-Adjusting