ITEM NAME:5pcs Plastic Joint Clip NS Joint Clamps Glass Keck Clamp 29mm #29 Description: - Made of polyacetal, and joint sizes are annotated on each clip, easy to identify - Used to prevent a joint from separating during a reaction process - To secure the two sides together and are available for different temperature and chemical environments - Will not scratch glassware or corrode; withstands temperatures up to 120 Â °C, cannot use with corrosive gas - Care needs to be taken that clips made from plastic are not being used to hold glass together that will GET THIS HOT Specification: - Joint Size 14: - 14mm, Minimum Diameter: 10mm; Maximum Diameter: 16mm - Joint Size 19: - 19mm, Minimum Diameter: 15mm; Maximum Diameter: 20mm - Joint Size 24: - 24mm, Minimum Diameter: 20mm; Maximum Diameter: 25mm - Joint Size 29: - 29mm, Minimum Diameter: 23mm; Maximum Diameter: 28mm - Joint Size 34: - 34mm, Minimum Diameter: 27mm; Maximum Diameter: 32mm - Joint Size 40: - 40mm, Minimum Diameter: 33mm; Maximum Diameter: 38mm - Please be awared that plastic is of certain elasticity, can be extended larger than measuring result. Package Included: 5 Pieces Joint Clips in one pack Note: Do not get this clamp touch high heat over 120 Â °C..Do not get this clamp touch high heat over 120 Â °C. - Made of polyacetal, and joint sizes are annotated on each clip, easy to identify. - Joint Size 19 - Joint Size 29 - Joint Size 14 - Joint Size 24.