This host has nice matte tan tinted anodizing, nice threads, and a highly polished smooth reflector with a 13mm opening.

Just add a 20mm MCPCB with LED, 22mm driver, a bit of solder, and you'll be in business!  The included screws can be used to hold the MCPCB tightly in place.

What's Included:

• Convoy L21B body / green-coated glass lens / smooth reflector 
• Plastic reflector insulator/spacer
• Screws
• Lanyard

Specifications:

• Body Diameter: 26.1mm
• Head Diameter: 62.6mm
• Length:  170.5mm
• Weight: 212g
• MCPCB required: 20mm
• Driver diameter required: 22mm
• Reflector finish: Smooth 
  • 13mm opening