SS100B. Speaker stand adapter. The HERCULES SS100B Speaker Stand Adapter is secure and can be mounted on 35mm to 40mm (1.38 "to 1.57") speakers. NOTE: If the speaker adapter is not loaded by the speaker, turn the upper wheel counterclockwise to extend the length of the adapter. Effect insertion length 90mm - 110mm (3.54 "- 4.33"). The Quik-N-EZ Speaker Adapter expands from 35mm to 40mm (1.38 "to 1.57") to accommodate speaker stand brackets. Maximum load capacity up to 50 kg (110.2 Ibs.).