Set of 4 joining clamps for closing cracks in (flat) tops and backs, shaped and notched polyamide jaws swivel on nickel-plated steel spindles to conform to nonparallel edges.

Material: Polyamide, nickel-plated steel 

Technical Details: Adjustment: 165-310 mm (6.5"-12.2") / 275-370mm (10.8"-14.6") / 315-410 mm (12.4"-16.1") / 365-460 mm (14.4"-18.1").

Set of 4 joining clamps for closing cracks in (flat) tops and backs, shaped and notched polyamide jaws swivel on nickel-plated steel spindles to conform to nonparallel edges.

Material: Polyamide, nickel-plated steel 

Technical Details: Adjustment: 365-460 mm (14.4"-18.1") / 455-580 mm (14.9"-22.8") / 550 - 675 mm (21.7"-26.6") / 625-750 mm (24.6"-29.5").

Clamp with precise double guide for drawing cracks together at the edges of the top or back of stringed instruments. Adjustable width (spring assisted), direct pressure application upon closure, 2 screws

Material: Nickel-plated brass 

Technical Details: Opening 13 mm, depth 19.5 mm (0.77").

Complete set of 4 joining clamps for closing cracks in arched tops and backs of violins or mandolins. the flat brass material is tension resistant but can be very easily re-bent and adapted to any arched shape. Specially shaped and notched polyamide jaws fit the instrument exactly and carefully, the material is glue-repellent.


Material: Brass 

Technical Details: Span widths: 85-125 mm (3.3"-4.9") / 130-170 mm (5.1"-6.7") / 150-190 mm (5.9"-7.5") / 180 - 220 mm (7.1"-8.7").

Complete set of 4 joining clamps for closing cracks in arched tops and backs. the flat brass material is tension resistant but can be very easily re-bent and adapted to any arched shape. Specially shaped and notched polyamide jaws fit the instrument exactly and carefully, the material is glue-repellent.


Material: Brass 

Technical Details: Span widths: 200-270 mm (7.9"-10.6") / 280-350 mm (11"-13.8") / 290-380 mm (11.4"-15") / 380-450 mm (15"-17.7").

Complete set of 6 joining clamps for closing cracks in arched tops and backs. the flat brass material is tension resistant but can be very easily re-bent and adapted to any arched shape. Specially shaped and notched polyamide jaws fit the instrument exactly and carefully, the material is glue-repellent.


Material: Brass 

Technical Details: Span widths: 300-370 mm (11.8"-14.6") / 360-430 mm (14.2"-16.9") / 400-470 mm (15.7"-18.5") / 440-510 mm (17.3"-20.1") / 580-650 mm (22.8"-25.6") / 610-680 (24"-26.8") mm.

Special crack clamp made from flat brass material which combines sturdiness with tradidional appearance. 3 arms are adjustable at angle for closing any cracks, the forth arm can be adjusted in length. specially shaped and notched polyamide jaws fit the instrument exactly and carefully, the material is glue-repellent.

Material: Brass 

Technical Details: Span widths: ca. 170-250 mm (6.7"-9.8").

Special crack clamp made from flat brass material which combines sturdiness with tradidional appearance. 3 arms are adjustable for closing any cracks, the fourth arm can be adjusted in length. specially shaped and notched polyamide jaws fit the instrument exactly and carefully, the material is glue-repellent.

Material: Brass 

Technical Details: Span widths: ca. 335-455 mm (13.2"-17.9").

This special device helps closing cracks in arched tops or bottoms which are surely clamped in two polyamide jaws. 8 adjustable pads can be individually positioned. The heavy duty construction prevents a shiftig of the wood while gluing which may occur when using single crack clamps.

Material: Zinked steel.

Clamp with precise guide for drawing cracks together at the edges of the top or back of stringed instruments. 3-D-adjustability (spring assistance), direct pressure application upon closure, 4 screws

Material: Aluminium 

Technical Details: Opening 12 mm (0.47"), depth 25 mm (0.98").