STANDARD TIP-TOPS	ROLLER	BEARING	PIN	SCREW	ASSEMBLY	END PLATE	COVER PLATE	GUARD	BAIL
#108L to #110L, #112, #114 TOPS	TR2	TB2 SS	TP2	S2	TRA2
#116, #118, #120 TOPS	TR3	TB3 SS	GP1	S2	TRA3
#122 to #132, #112L, #114L, #116L TOPS	TR4	GB1 SS	TP4	S2	TRA4