FOR TIP-TOPS	ROLLER	BEARING	PIN	SCREW	TOP ROLLER ASSEMBLY
Standard #108L thru #114	TR2	TB2	TP2	S2	TRA2
Standard #116 thru #120	TR3	TB3	GP1	S2	TRA3
Standard #122 thru #132, #112L, #114L, #116L	TR4	GB1	TP4	S2	TRA4
All SHD Models	TR5	TB5	TP5	S3	TRA5