JWWINCO 31-100-M20-100-B1-TK GN31-100-M20-100-B1-TK Leveling Feet, Stainless Steel, Thread:M20 Stud:100mm Information GN 31 Stainless Steel-Levelling feet with vulcanised rubber (Type B3, B4, C3 and C4) and screw version W feature fewer dead spots owing to their construction method and are also easier to clean. GN 31 Stainless Steel-Levelling feet will be delivered mounted and are not removable. Specification Base plate, sheet metal Stainless Steel, European Standard No. 1.4301 (AISI 304) Threaded stud Stainless Steel, European Standard No. 1.4305 (AISI 303) Hexagon nut ISO 4032 Stainless Steel, European Standard No. 1.4301 (AISI 304) Rubber pad, inlaid black: Perbunan (NBR) 80±5 Shore A white: Perbunan (NBR) 80±5 Shore A Rubber pad, vulcanised 80±5 Shore A black: Perbunan (NBR) white: Perbunan (NBR)