All sizes are 76mm length. Smaller sizes up to 48mm I.D. are constructed from 4 high grade silicone layers reinforced with 3 layers of tough polyester fabric with a total wall thickness of approx 4.5mm.
eBay
KegLand DuoTight 8mm(5/16) Push In To 5/8" Suits Keg Couplers And Tap Shanks Plastic Quick Connect Pipe Hose Connector
Aliexpress UK
This BSP Hydraulic Adaptor is a 90 degree compact coupling connector available in three different variations: M/M, M/F, and F/F. It is suitable for use in hydraulic systems and is made of high-quality materials ensuring durability and long-lasting use.
eBay
YQBS Brass Barb Tail 6mm 8mm 10mm 12mm 19mm Hose 1/4 3/8 1/2 3/4 Elbow Male Female Pipe Connector Fitting Joint Coupler Adapter
Aliexpress UK
RIGID CLAMP SHAFT COUPLING. RIGID ALUMINIUM SHAFT COUPLING. These couplings are Rigid Clamp types and are Used in variety of Industrial applications and automation to join motor and leadscrew or ball screws.
eBay
YQBS Elbow Barb Tail 6mm 8mm 10mm 12mm 19mm Brass Hose 1/4 3/8 1/2 3/4 Male Female Pipe Connector Fitting Joint Coupler Adapter
Aliexpress UK
The coupling shaft is made of 45# steel, suitable for connecting servo motor, stepper motor, encoder, screw driving, machine platform, etc. The flexibility of the coupling shaft joint removes stress between the motor and drive components.
eBay
5pcs M4 M5 M6 M8 Metric Male Thread To 3mm 4mm 5mm 6mm 8mm Hose Barb OD Brass Barbed Pipe Fitting Coupler Connector Adapter
Aliexpress UK
5x8mm Shaft Coupler Ideal for 3D Printers - RepRap and CNC. Ideal for Stepper Motor, Servo Motor, Screw Driving connections. High Quality Aluminium Shaft coupler. Coupler Specifications · Coupler Height - 25mm.
eBay
M16 M18 M20 Metric Male Thread To 8mm 10mm 12mm Hose Barb Brass Pipe Fitting Coupler Connector Adapter
Aliexpress UK
8mm x 1/2" BSP Female Compression Coupling Brass CxFI SKU : 901561 C x FI 8mm Compression (C) 1/2" BSP Female Thread - 19.793mm (FI) Complete with olive(s) Quantity in Pack : 1 Please note BSP Sizes are not the same as displayed on a ruler. If you are unfamiliar with BSP sizes please use the metric size as your reference.
eBay
4mm 5mm 6mm 8mm 10mm 12mm Brass Straight Hose Pipe Fitting Equal Barb Gas Copper Barbed Coupler Connector Adapter
Aliexpress UK
Enhance the functionality of your plumbing system with this top-quality compression straight coupling. This compression straight coupling is suitable for various plumbing applications. COMPRESSION STRAIGHT COUPLING 8MM.
eBay
4mm 6mm 8mm 10mm 12mm 14mm 16mm 19mm 25mm Hose Barb Bulkhead Brass Barbed Tube Pipe Fitting Coupler Connector Adapter
Aliexpress UK
Series 21 Female with 6mm or 8mm hosetail. 6mm or 8mm Hosetail. Interchange: Rectus 21. Easy to Connect.
eBay
1pcs Brass 2 Way Reducing Straight Hose Barb Barbed Pipe Fitting Reducer Copper Coupler Connector Adapter 4 19 6mm-3mm 8mm-10mm
Aliexpress UK