Comparison : Item # 221001, Precision Shoulder Screws - Slotted / Socket Head
Item # 221004, Precision Shoulder Screws - Slotted / Socket Head
Item # 221007, Precision Shoulder Screws - Slotted / Socket Head
Item # 221010, Precision Shoulder Screws - Slotted / Socket Head
Item # 221013, Precision Shoulder Screws - Slotted / Socket Head