Dormer E500 HSS Coarse Tap Straight Flute 5mm Second Brand_Comet and by using a 17mm

and by using a 17mm socket

Size: 19-40mm

designed specifically for the Whale Expanse Space Heater

Telescopic power bar with flexible head & socket safety lock

Surecatch hook latch door retainer white (Willerby and BK)

Dormer E500 HSS Coarse Tap Straight Flute 5mm Second Brand_Comet and by using a 17mmDormer E500 straight flute taps are the only type of taps that can be used by hand, but they may also be used in a machine if required. Extremely versatile, can tap through or blind holes in most materials. When tapping blind holes straight flute taps should be used in sets. The three taps which form a set are known by more than one name. 1. Taper or First tap 2. Second or Intermediate tap 3. Bottoming, third or plug tap. Metric coarse straight flute