These servo clamp are made specifically for use on Standard size servos, as HITEC HS-7950TH, HS-7954SH and similar
As can be seen the two guides fit inside the pockets tab of the servo, ensuring a superior fit and alignment, eliminating any movement.
ATTN: 1 Set include 2 servo clamps and 4 3mmx 16 socket screw
FIT: HITEC large servos HS-7950TH , HS-615MG, HS7954SH and similar servos
For other servo brand/model , check the chart below for measure info.