PackThere are 8pcs black collets and 8pcs blue clips. Black bowden tube coupling collet clamp clips are size about 10mm/ 0.39 inch x 8mm/ 0.32 inch hole 4mm/ 0.16 inch suitable for 4mm tube the blue clips are about 10mm/ 0.39 inch x 11.2 mm/ 0.44 inch. MaterialThe bowden tube coupling collet is made of high-quality ABS material which is sturdy and durable. FeaturePC4-01 PC4-M6 KJH04-M6 PC4-M5 also compatible with Micro Swiss all metal hot end and similar products on the market. ApplcationFasten PTFE tube to provide stability also very suitable for fixing 4 mm/ 0.16 inch tubes.

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