Bach

12

One Piece
Official source link providedPrice basis: RetailerLast checked: Jan 29, 2026

Specifications

Cup Diameter
16.50mm
16.15mm17.60mm
vs. All Models
9% · Small
Cup Depth
Medium
Bore Size
4.50mm
4.50mm4.65mm
vs. All Models
58% · Average
Rim Shape
Narrow
Recommended For
All AroundDelicate EmbouchureFlexibility
View on official site

Other Brand Similar Specs

Spec proximity does not guarantee actual feel or tone. Trying before purchase is recommended.
Osmun CH (Chicago)Medium Similarity
Cup Diameter: +0.01mmBore: +0.12mmCup shape data unavailable
Specs used: 4 / missing: 1
Osmun One-Piece ChicagoMedium Similarity
Cup Diameter: +0.01mmBore: +0.12mmCup shape data unavailable
Specs used: 4 / missing: 1
Osmun One-Piece LondonMedium Similarity
Cup Diameter: +0.01mmBore: +0.12mmCup shape data unavailable
Specs used: 4 / missing: 1
Conn 5Medium Similarity
Cup Diameter: +0.01mmBore: +0.15mmCup shape data unavailable
Specs used: 4 / missing: 1
JK (Josef Klier) 4DKMedium Similarity
Cup Diameter: SameBore: -0.30mmCup shape data unavailable
Specs used: 4 / missing: 1
JK (Josef Klier) 4BKLow Similarity
Cup Diameter: SameBore: +0.10mmCup Depth: medium → deepCup shape data unavailable
Specs used: 4 / missing: 1
JK (Josef Klier) 4BMLow Similarity
Cup Diameter: SameBore: +0.10mmCup Depth: medium → deepCup shape data unavailable
Specs used: 4 / missing: 1
JK (Josef Klier) 4EKLow Similarity
Cup Diameter: SameBore: -0.50mmCup Depth: medium → medium shallowCup shape data unavailable
Specs used: 4 / missing: 1
JK (Josef Klier) 4EMLow Similarity
Cup Diameter: SameBore: -0.50mmCup Depth: medium → medium shallowCup shape data unavailable
Specs used: 4 / missing: 1
Osmun B (Bloom)Low Similarity
Cup Diameter: +0.01mmBore: +0.30mmCup Depth: medium → medium shallowCup shape data unavailable
Specs used: 4 / missing: 1

Other Models by Bach

317.60mm · Medium · 4.50mm717.25mm · Medium · 4.50mm7S17.25mm · Medium · 4.65mm1016.80mm · Deep · 4.50mm10S16.80mm · Deep · 4.65mm

Where to Find

View on Official Sitemouthpieceexpress.com
Search on GoogleGoogle Search

This site does not sell mouthpieces. Links are provided for reference only. Please verify prices and availability directly with retailers.