Carbide Horseshoe Pins & Related Products › HSS Taps Image 1 of 4 Image 2 of 4 Image 3 of 4 Image 4 of 4 HSS Taps from £3.18 All our taps are designed for machine tapping which will outlast the normal hand tap products. Size: Select Size 3/8" Spiral 3/8" Spiral PVD 3/8" Straight Quantity: Add To Cart Added! All our taps are designed for machine tapping which will outlast the normal hand tap products.