Imperial 70258 High Speed Steel Bottom Tap, 7/8"-9 Thresholds 38-inch D x 39

38-inch D x 39

Frame Dimensions: 10-1/2" x 15"

Used as an underlay beneath asphalt shingles

Yellow handle

Imperial 70258 High Speed Steel Bottom Tap, 7/8"-9 Thresholds 38-inch D x 39Highlights: Material: High Speed Steel Number of Flutes: 4 Overall Length: 4. 6875" Pitch Diameter Limits: H4 Shank Type: Straight w square Square Length: 0. 7500" Square Size: 0. 5230" Thread Length: 2. 2188" Thread Size: 7 8" 9 High speed tungsten steel taps out perform ordinary taps for production tapping Special design keeps taps sharper longer Sizes are clearly stamped on the shank of each tap Precision ground flutes cut accurate, clean threads