These round groove pulleys are also referred to as U groove pulleys. They are made of 6061-T6 Aluminum with a D-Shaft hole through of 6mm, and 2 set screws for ultimate strength. Use it with the 5mm Round Belt and for gearing up or down combine them with the other round groove pulleys that range from 10mm to 60mm.

Specifications:

• Material: 6061-T6 Aluminum
• Bore: 6mm
• Belt Diameter: 10mm
• Step File

These round groove pulleys are also referred to as U groove pulleys. They are made of 6061-T6 Aluminum with a D-Shaft hole through of 6mm, and 2 set screws for ultimate strength. Use it with the 5mm Round Belt and for gearing up or down combine them with the other round groove pulleys that range from 10mm to 60mm.

Specifications:

• Material: 6061-T6 Aluminum
• Bore: 6mm
• Belt Diameter: 20mm
• Step File

These round groove pulleys are also referred to as U groove pulleys. They are made of 6061-T6 Aluminum with a D-Shaft hole through of 6mm, and 2 set screws for ultimate strength. Use it with the 5mm Round Belt and for gearing up or down combine them with the other round groove pulleys that range from 10mm to 60mm.

Specifications:

• Material: 6061-T6 Aluminum
• Bore: 6mm
• Belt Diameter: 30mm
• Step File

These round groove pulleys are also referred to as U groove pulleys. They are made of 6061-T6 Aluminum with a D-Shaft hole through of 6mm, and 2 set screws for ultimate strength. Use it with the 5mm Round Belt and for gearing up or down combine them with the other round groove pulleys that range from 10mm to 60mm.

Specifications:

• Material: 6061-T6 Aluminum
• Bore: 6mm
• Belt Diameter: 40mm
• Step File

These round groove pulleys are also referred to as U groove pulleys. They are made of 6061-T6 Aluminum with a D-Shaft hole through of 6mm, and 2 set screws for ultimate strength. Use it with the 5mm Round Belt and for gearing up or down combine them with the other round groove pulleys that range from 10mm to 60mm.

Specifications:

• Material: 6061-T6 Aluminum
• Bore: 6mm
• Belt Diameter: 50mm
• Step File

These round groove pulleys are also referred to as U groove pulleys. They are made of 6061-T6 Aluminum with a D-Shaft hole through of 6mm, and 2 set screws for ultimate strength. Use it with the 5mm Round Belt and for gearing up or down combine them with the other round groove pulleys that range from 10mm to 60mm.

Specifications:

• Material: 6061-T6 Aluminum
• Bore: 6mm
• Belt Diameter: 60mm
• Step File

The 5mm Round Groove Belt is 3M long and has a 10% stretch. It is also referred to as a U Groove belt. 

• Material - Polyurethane
• Diameter - 5mm
• Length - 3m
• Color - Yellow
• Stretch factor - 10%
• Surface - smooth
• Solid core
• Open end

This kit includes the tools need to cut and join a urethane belt. Recommended for the 5mm Urethane Round Belt - part # 76400