diff --git a/docs/accessories/heatsink-case/heatsink-4012.md b/docs/accessories/heatsink-case/heatsink-4012.md
index 9c48a1f50..f8b5abc55 100644
--- a/docs/accessories/heatsink-case/heatsink-4012.md
+++ b/docs/accessories/heatsink-case/heatsink-4012.md
@@ -2,9 +2,9 @@
 sidebar_position: 5
 ---
 
-# 瑞莎 Heatsink 4012
+# 瑞莎 4012 散热器
 
-瑞莎 Heatsink 4012 是一款用于 ROCK 5B / ROCK 3B 的散热器，长 40mm，宽 40mm，高 12mm。
+瑞莎 4012 散热器是一款用于 ROCK 5B / ROCK 3B 的散热器，长 40mm，宽 40mm，高 12mm。
 ![Heatsink 4012](/img/accessories/heatsink-case/heatsink-4012-1.webp)
 
 ## 物理规格
diff --git a/docs/accessories/heatsink-case/metal-case-rock5b.md b/docs/accessories/heatsink-case/metal-case-rock5b.md
index 45b1ed109..dffe23c61 100644
--- a/docs/accessories/heatsink-case/metal-case-rock5b.md
+++ b/docs/accessories/heatsink-case/metal-case-rock5b.md
@@ -48,4 +48,6 @@ Radxa 为 ROCK 5 Model B 单板电脑设计了特别定制的金属外壳，是
 
 # 机械规格
 
+单位：mm
+
 ![Radxa Metal Case for ROCK 5B](/img/accessories/heatsink-case/metal-case-3.webp)
diff --git a/i18n/en/docusaurus-plugin-content-docs/current/accessories/heatsink-case/metal-case-rock5b.md b/i18n/en/docusaurus-plugin-content-docs/current/accessories/heatsink-case/metal-case-rock5b.md
index 0f832cd52..7f0d5c8a3 100644
--- a/i18n/en/docusaurus-plugin-content-docs/current/accessories/heatsink-case/metal-case-rock5b.md
+++ b/i18n/en/docusaurus-plugin-content-docs/current/accessories/heatsink-case/metal-case-rock5b.md
@@ -48,4 +48,6 @@ Radxa has designed a specially customized metal case for the ROCK 5 Model B sing
 
 # Mechanical Specification
 
+Unit: mm
+
 ![Radxa Metal Case for ROCK 5B](/img/accessories/heatsink-case/metal-case-3.webp)
diff --git a/static/img/accessories/heatsink-case/metal-case-3.webp b/static/img/accessories/heatsink-case/metal-case-3.webp
index c026bd5af..574b6f9eb 100644
Binary files a/static/img/accessories/heatsink-case/metal-case-3.webp and b/static/img/accessories/heatsink-case/metal-case-3.webp differ