The 5952A is an adjustable tip Test Probe Kit with slim retractable probe is fully insulated to within 1/8-inch of tip. Needle point tip adjusts to desired length from 0 to 3-inch. Stainless steel needle sharp point easily pierces varnish and thin insulation. Tip can be re-pointed if necessary. Shrouded banana plug is designed to fit most popular digital multimeter jacks. Banana plug moulded directly to the wire for robust pull strength and spring is nickel plated Beryllium Copper for long insertion life. 4-foot test lead wire is silicone insulated for high temperature resistance.