Click to expand Tap to zoom MLT System Stainless Steel Insert for Cap (100/Bag) by MLT Sale $42.80 | / SKU MLT-L1 1 2 3 4 5 6 7 8 9 10+ Quantity Quantity Add to cart Made of Stainless Steel, the inserts can be inserted into the channel on top of the cap. It will retrofit the cap for prolonged life after the ratcheting teeth have become worn out or damaged.