Comes as a pair: includes stainless steel 2-in-1 puncture plug/reamer tool, knife trimming tool, 5 each thin, medium, & thick tire worms CNC Machined from 6061 aluminum Expanding silica plug fits most MTB, Gravel & Road Handlebars with a larger than 17mm inside diameter Supplied with 17mm, 19mm, and 21mm silica plugs to fit different handlebar diameters Screws into bars using a just a 4mm Allen key Plugs and Repairs multiple holes that wonÆt seal with just sealant Compatible with most open-end grips and drops bars with a 84mm straight section at the bar end Weight - 33g per side (excluding tire worms) Dimensions - 89 x 27 x 27mm. MUC-OFF STLTH PLUG RED