The CASTEL-QPs clamping runs parallel to the rail, and as such CASTEL-QP is the perfect add-on to any NOVOFLEX Bellows BALPRO 1, BALPRO T/S, BAL-F, as well as our Auto-Bellows. Also, macro lenses with a tripod collar and a longer coupling plate underneath will benefit from CASTEL-QP. If finer settings of the slider are desired, e.g. for Focus Stacking, the Fine-adjustment handle CAST-FINE is available. Technical specifications: Dimensions: 200 × 100 × 33 mm (7.9 × 3.9 × 1.3”) Glider width: 66 mm (2.6”) Weight: 412 g (0.9 lb.) Travel: 140 mm (5.5”) Tripod connection: 3x 1/4"-20 - 3/8"-16 thread pairs and NOVOFLEX Q profile (ARCA-UniQ/C compatible) Camera connection: NOVOFLEX Q-profile (ARCA-UniQ/C-kompatible) Adjustment range with a complete revolution of the drive wheel: 15mm (0.6") Camera connector pieces (Q=Plates) not included.