Ingersoll Rand 172LNA1 Needle Scaler Kit 9 16 in Stroke Lg, 5,500 bpm, 1 4 in NPT Female, Heavy Duty FBCB1255P5 Insert Types Included Helical Inserts Insert Types Included Helical Inserts Insert Material 18 8 Stainless Steel Finish Plain Thread Type UNC Number of Inserts 18 Compatible Material Metal Helical Insert Type Free Running System of Measurement Inch Includes 18 Each 3 8" 16 Inserts Heat Rating Not Rated Footwear Style Hiker Boot Insulation Type None Upper Boot Material All Leather Liner Material Gore Tex(R) Midsole Material EVA Mark II Slip Test Results Dairy Tile Oily Wet Not Tested Upper Material Leather Manufacturers Suggested Sole Slip Rating Best Safety Criteria Best Slip Resistance For Use With Mfr Hose Size 5 16 in