Need to surface mount a vintage or reissue Danelectro pickup on your project guitar maybe even without a pickguard? Here's the part you need to make that happen. Chrome plated brass. Outside measurements 115mm X 26.8mm. Inside measurements 82.8mm X 16.4mm. Pickup height screw holes are 90.4mm apart. Ring mounting holes are 104.6mm apart. Thickness of ring 1.76mm.