Not sure what size post you need? Order this and try them all.
Five Implantium™ posts, one of each size, in a single bag.
Screw your new top onto each one until you find the length and thickness that fits.
1.0 × 6mm
1.0 × 8mm
1.2 × 5mm
1.2 × 6mm
1.2 × 8mm
ASTM F136 implant-grade titanium. Internally threaded, nickel-free, waterproof, tarnish-proof.
Free UK delivery -Enjoy complimentary 24hr delivery on orders over £60
Same day dispatch -Order before 2pm GMT on weekdays for same day dispatch on next day deliveries
Implantium™ is Smoothie London's standard for jewellery that works as hard as you do:
- Implant-grade titanium: ASTM F-136 - the same material grade used in medical implants, chosen for its exceptional biocompatibility and suitability for sensitive skin.
- Waterproof & tarnish-proof: wear it in the shower, at the gym, or on holiday without a second thought.
- No-poke comfort: our flatback design means you can sleep, train, and live in them 24/7.
Where most brands settle for stainless steel or mystery alloys, we raised the bar and created Implantium™: a new benchmark for piercing jewellery that’s stylish, and designed for everyday life.
Everyone's skin is different - if you're choosing jewellery for a fresh or healing piercing, we always recommend following your piercer's guidance.
8mm - Standard for lobes and most fresh piercings.
6mm - Snug fit for thinner cartilage placements (helix, tragus, flat). If your piercing is fully healed and you want a flush look, choose 6mm.
For more custom sizing recommendations, take our quiz.
Premium quality
ASTM F-136
Implant Grade Titanium
21,000+
Stacks built
1500+
5-star reviews
Why Implantium™?
Our Implantium™ titanium is ASTM F-136 - the same material grade used in medical implants: highly biocompatible, waterproof, and made for everyday wear.