This is a pack of ten 12x18x4mm metal shielded "Speed" ball bearings. ProTek R/C "Speed" bearings are high quality steel/chrome bearings designed for the R/C racing enthusiast. 

These 12x18x4 metal shielded bearings are user for many Traxxas vehicles. Please check the manual that came with your vehicle for the correct size if you are not certain. 

• HB Racing D815
• HB Racing D817T
• Kyosho DBX 2.0
• Kyosho DBX VE
• Kyosho Evolva
• Kyosho Rage VE
• Kyosho V-One R4
• Kyosho V-One RRR
• Losi 810
• Losi Comp Crawler
• Losi TEN-SCT Nitro
• Losi TEN-SCTE
• Losi TEN-SCTE 2.0
• Losi TEN-T
• Mugen MRX5 WC
• Redcat Shredder SC
• Redcat Shredder XB
• Serpent Spyder SRX-4
• Team Associated SC10 4x4
• Team Durango DEX408
• Team Durango DEX410 V5
• Team Durango DNX408
• Team Durango DNX408 V2
• Team Durango DNX408T
• Team Magic E4D Drift Spec
• Team Magic E4D MF Pro
• Team Magic G4D Touring (Drift Spec)
• Team Magic G4JR Touring Car
• Traxxas Rally
• Traxxas Revo
• Traxxas Slash 4x4
• Traxxas Slash 4x4 Ultimate
• Traxxas Stampede
• Traxxas T-Maxx
• Traxxas Telluride 4x4
• Traxxas XO-1
• Vaterra Glamis Fear
• Vaterra Glamis Uno
• Vaterra Halix
• Vaterra Pre Runner
• Vaterra V100S
• XRAY RX8
• Yokomo B-MAX4 II