Clamp

parts:
M3x8mm Stitching Round Metal Endless Screw Thread Insert Dice Brass Tone ( https://www.aliexpress.com/item/100pcs-M3x8mm-Stitching-Round-Metal-Endless-Screw-Thread-Insert-Dice-Brass-Tone/32860721081.html?af=137322&afref=&cv=47843&dp=e24f7c0ad55874b2d8e0cc4a46978f8e&mall_affr=pr3&spm=a2g0s.9042311.0.0.27424c4dPGn3Qo&subid1=DPlnKr2ATnM&aff_platform=aaf&cpt=1532894718499&sk=VnYZvQVf&aff_trace_key=e06ddab39bea4922a7a0f4cf837b0b8f-1532894718499-00087-VnYZvQVf&terminal_id=02c82afc33b543e592b3b