Plumbing Supplies
Ruko HSS Single-Cut Tap Set in Plastic Case, Bright Finish, 15 Pieces, R245004RO
Cutting direction: Right hand cut Shank: Square as per DIN 10 Tolerance: DIN ISO 2 Thread angle: 60 degree Thread core hole diameter 1: 2.50 - 10.20 mm
https://www.bizrate.co.uk/plumbingsupplies/ruko-hss-single-cut-tap-set-oid37349142216.html