New CPP calipers and 7/16 Banjo bolt kit for my 1985 c10 squarebody short bed

Finally got my new CPP calipers in and the 7/16 banjo bolt kit so excited that everything is coming together hope you guys follow me till the end of my project truck build thanks for watching and don't forget to subscribe.
My truck parts:
Classic Performance Brake Hoses
www.summitraci...
Chevy Truck Front 4035 4036 D52 Caliper With Brake Pad Set Cast Iron 1-1/4 1.25"
www.ebay.com/i...
My camera and accessories for my RUclips videos
DJI Osmo Action
a.co/d/g5g47CD
LP Battery Charger Kit
a.co/d/9Sc6MEe
PGYTECH Camera Cage
a.co/d/g3IU2ci
CYNOVA Osmo Action Dual 3.5mm Mic Adapter
a.co/d/9UJfg7z
PGYTECH Extension Pole Tripod Mini
a.co/d/g4XKQDZ
VIJIM LED Camera Light VL66
a.co/d/ibfhHwR
Saramonic Plug&Play 3.5mm TRRS Mini Shotgun Microphone
a.co/d/8NNoCOX
3.5mm 90 Degree Audio Adapter
a.co/d/bixPNLJ
PULUZ Suction Cup Mount
a.co/d/gvLCTrR
Music by:Loded Beats
soundcloud.com...
creativecommons...
Music by:Aries Beats
soundcloud.com...
creativecommons...

[@philbillycreekfishn3681]

Installing these right now. What's that big rubber ring for? Good video bro