This Vixen saddle plate has a sliding block to secure your dovetail bar without damaging the side of bar with screw marks. All the Geoptik Losmandy saddles are CNC machined and fully anodized.
Top quality made in Italy.
Chemical Composition Aluminium Anticorodal AW-6082 - T6
Very nice quality bit of kit. Plenty of options for securing to a mount. In my case I'm using it on a home made alt/az mount. It does need a spacer underneath so the tension knob can clear the base if you're mounting on a flat surface. Finish seems very durable and saddle feels very secure when tightened.
I had purchased a heliofind mount for my PST and wanted a more secure saddle to connect the cross bar to. The team at Testar recommended this and it was easily put in place. Looks good too.