The SG15TE secure grip bolt-hole spreader can be used on all flange types with bolt-hole sizes ranging from 1.87" (47.5mm) to 2.44" (62mm). The collet holders are supplied with adjustable drive cones which can be adjusted outward from their central position allowing the tool to spread flanges apart and remove a spacer, wafer, or butterfly valve. Spreading force of 33.8 imperial tons (300 kN) if used in pairs as recommended. Short Collet Holder Sets (SCH) are available which can offer an improved range of application. Collet Holders can also be dismantled and inserted through bolt-holes from the opposite side.