HSI Excavator Size 18 Double End Air Collection Each Packing:Each Product Features Specifications Usage Instruction The Henry Schein Air collection has a unique and exclusive handle design that makes the instruments as light as air with an average weight of 12 gram. The handles are made from Stainless 304 steel and the welded tips are 420 steel. The instruments be cleaned in thermodesinfector and sterilized in the autoclave. The product range consists of single ended and double ended instruments for the operatory and periodontal procedures.