This is an authentic manufacturer approved replacement part designed for use with Shimano Reels. The pawl cap is attached to line guide. It has internal threads that secure the part to the line guide. Simply screw the cap on using a flat-head screwdriver. This part is made out of plastic and it is sold individually.
This is an authentic OEM component from Shimano. The spool tension spring is found in many bait casting reels. This metal item is fastened between the spacer and the ball bearing. A screwdriver and a pair of pliers may be needed for making the replacement. The spool tension spring is sold individually.