With its complete adapter ring system, it supports almost any combination of lens and camera systems. You can combine most medium-format lenses and nearly all 35 mm lenses and special lenses with any size camera body up to 6 × 7 format. Thanks to its compact dimensions, the BALPRO 1 is also ideal for on the road and in the field. It is possible to create fully automatic bellows for various cameras systems by combining the BALPRO 1 with one of the automatic reversing rings available here. Please select the proper adapters to connect your camera(s) and lens(es) here Technical specifications: Size: h = 150 mm (5.9”), b = 115 mm (4.52”), l = 200 mm (7.87”) Weight: 755 g (1.6 lbs) Minimum extension: 30 mm + adapters Maximum extension: 170 mm + adapters