HARFINGTON 20pcs Knurled Clamping Knobs Thumb Screws M3 x 16mm Metric Male Thread 13mm Matte Plastic Head 304 Stainless Steel Stud Hand Threaded Knob Thumbscrew Handle, Black M3 x 16mm x 13mm hidden LIGHTWEIGHT NEOPRENE BLEND: Constructed with

LIGHTWEIGHT NEOPRENE BLEND: Constructed with a soft

100 pcs Blue

electronic hearing protection and cochlear implants

hole inside dimension is 1/2 in

6 Styles and 3 Types Feathers PackageTotal of 240 pieces

HARFINGTON 20pcs Knurled Clamping Knobs Thumb Screws M3 x 16mm Metric Male Thread 13mm Matte Plastic Head 304 Stainless Steel Stud Hand Threaded Knob Thumbscrew Handle, Black M3 x 16mm x 13mm hidden LIGHTWEIGHT NEOPRENE BLEND: Constructed withHARFINGTON 20pcs Knurled Clamping Knobs Thumb Screws M3 x 16mm Metric Male Thread 13mm Matte Plastic Head 304 Stainless Steel Stud Hand Threaded Knob Thumbscrew Handle, Black Product Features Size Standard metric thread size: M3 (0. 5mm pitch); thread length: 16mm 0. 63"; head size: 13mm x 8mm 0. 51" x 0. 31" (D*T); step size: 10mm x 2mm 0. 39" x 0. 08" (d*t); total length: 26mm 1. 02"; color: black; knob style: knurled Material 304 stainless steel