Boston straplock system id: 33236 sku: BSL-20-BK brandname: Boston Details straplock system, with screws, black Related products BSL-20-CH Boston straplock system strap buttons and strap locks BSL-20-GD Boston straplock system strap buttons and strap locks BSL-20-NI Boston straplock system strap buttons and strap locks BSL-20-BC Boston straplock system strap buttons and strap locks