Camera Accessories
K&M 20001 Extension
K&M 20001 Extension, Tube Extension, Powder-coated steel, 3/8" Female thread, 3/8" Male thread, Diameter: 18 mm, Length: 130 mm, Weight: 0.25 kg, Colour: Black
https://www.bizrate.co.uk/cameraaccessories/k-m-20001-extension-oid20630974113.html