Rex Cut Sigma Green Max Grinding Wheel, 4-1/2x1/4x5/8-11", 36Grit 739150 | Zoro
Sigma Lamellar Grinding Wheel 120 Grit - Diameter 115 mm / Hole 22.2 mm (72F120) | FloorBox
5 pk REX-CUT 4 1/2 X 7/8 T36 Sigma Green 730000 | eBay
Sigma Green
DIAMOND GRINDING WHEELS -
Sigma Z
Rex-Cut Abrasives 739151 Sigma Green Max Grinding Wheel, 36 Grit, 5in Dia. x 1/4 Thick x 5/8-11 Arbor (Pack of 10) : Amazon.co.uk: Business, Industry & Science