and nominal voltage (9 V) are details directly from the manufacturer's product text

Surface: Phosphate finish

See the manufacturer's product information for reference: Bahco product page

Number of channels: 3

Barrel for bent XT TIPS WXP120 Unit(s):Pcs and nominal voltage (9 V)Spare Parts Weller barrel for bent XT tips This spare part barrel from Weller is specified as a barrel for bent XT tips and is indicated for use with the Weller WXP120 soldering iron. The product is listed on Weller's official product page as a spare part with item number T0058765766N. Description T0058765766N is a replacement barrel designed to enable the use of bent XT tips with the WXP120. Information from the manufacturer's product page indicates