Optimized Tight Space Plumbing Access Tool:Engineered with a 10.3-inch extended handle and patented open-slot design to install and access under-sink nuts and fixtures in confined spaces where standard plumbing tools often face accessibility constraints.Helpful Tip: Verify your workspace dimensions before purchase for optimal fit.Package Includes:Sink Installation Tool and 2 Aluminum Inserts.Please verify product dimensions before purchase to ensure compatibility with your needs.Versatile Plumbing Tool:Includes 4.5" & 1.25" aluminum inserts that tighten #2/3/4/6 corner nuts. Ideal for undermount sink installations, bathroom repairs, and kitchen plumbing including faucet replacements. Designed to assist (not replace) standard toolsensure proper fit for best results.Beginner-Friendly Design:This plumbing tool requires no setupsimply snap in the correct insert and begin turning. The multi-size compatibility ensures a secure grip on various fittings while preventing slippage. For best results, apply steady vertical pressure during use.Smart Material Combination-This high-performance plumbing tool combines a durable ABS plastic body with reinforced aluminum inserts at critical stress points, offering both scratch-resistant protection and enhanced structural strength for under-sink repairs. The set includes 1 versatile wrench and 2 interchangeable inserts. Note: For optimal performance, always match insert size to your fittings and maintain even pressure during operation.