Made of stainless steel this adapter will allow you to go from a Large [L] interchangeable Twist/Spin tip to a Small [S] interchangeable Twist/Spin cable. Small [S] Cable to Large [L] Tip | 2501-A will allow you to attach tips that are 5.5mm (US 9) through 10.0mm (US 15) onto cables that are labelled [S]. Mini [M] Cable to Small [S] Tip | 2501-AM will allow you to attach tips that are 2.75mm (US 2) through 5.0mm (US 8) onto cables that are labelled [M].