Original German WWI Maxim MG Aluminum Ammunition Belt Hand Select:Yes a square central hole that

a square central hole that allows the tool to be used as a wrench for turning the cleaning/charging rod while cleaning the bore or drawing a charge

Lewis became frustrated with trying to persuade the US Army to adopt his design and so ("slapped by rejections from ignorant hacks"

to be mounted on left side of receiver

Note: These are delicate and exceedingly rare to have survived for over 60 years

See Dolf Goldsmith

Original German WWI Maxim MG Aluminum Ammunition Belt Hand Select:Yes a square central hole thatOriginal Item: Interwar 250 Round Aluminum belt developed for easy hand loading for use with the MG 08, . 303 VICKERS and the MG 08 15 using the 08 Feed Pawl without finger guide. Condition is fragile, generally good but will show some corrosion and minor damage throughout. Note: Same day shipping not always available for these items due to lead time.